Eriophyllum confertiflorum |
Eriophyllum confertiflorum var. confertiflorum |
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golden-yarrow, yellow-yarrow |
golden-yarrow |
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Habit | Shrubs, 20–50(–100) cm. | |||||
Stems | erect (woolly). |
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Leaves | (proximal usually mostly alternate): blades cuneate to obovate, 0.5–5 cm (the longer 1–2-pinnately lobed, lobes linear, the shorter 3–5-lobed or -toothed), ultimate margins entire, revolute, abaxial faces woolly, adaxial usually glabrate (distal leaves gradually reduced in size and lobing). |
blades cuneate to obovate, 0.5–5 cm, the larger 1–2-pinnately lobed, lobes linear, the smaller 3–5-lobed or -toothed. |
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Peduncles | mostly 0–2.5(–9) cm. |
0–1(–2) cm. |
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Involucres | campanulate, 3–7 mm diam. |
3–5 mm diam. |
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Ray florets | 0 or 4–6(–8); laminae golden yellow, 2–5 (× 1.5–3) mm. |
usually 4–6, rarely 0; laminae 2–4 mm. |
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Disc florets | 10–75; corollas 2–4 mm. |
10–35; corollas 2–3 mm. |
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Phyllaries | 4–7, distinct or connate at bases (broadly elliptic or ovate, carinate, apices obtuse or acute). |
4–6, broadly elliptic, apices obtuse. |
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Heads | (3–)4–7(–10) or 10–30+ per array. |
10–30+ per array. |
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Cypselae | 1.5–3.5 mm; pappi of 2–14 cuneate to oblanceolate (subequal), erose scales 0.5–1.3 mm. |
1.5–3 mm; pappi 0.5–1 mm. |
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2n | = 16, 32, 48, 64. |
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Eriophyllum confertiflorum |
Eriophyllum confertiflorum var. confertiflorum |
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Phenology | Flowering Mar–Jul. | |||||
Habitat | Dry, sandy to rocky sites, coastal scrub to forest communities | |||||
Elevation | 0–3500 m (0–11500 ft) | |||||
Distribution |
CA; Mexico
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CA; Mexico |
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Members of var. confertiflorum complex hybridize with at least four varieties of Eriophyllum lanatum. Eriophyllum latilobum, E. jepsonii, E. confertiflorum var. tanacetiflorum, and some populations of E. confertiflorum var. confertiflorum with larger, broader leaves and longer peduncles may have resulted from such hybridizations (L. Constance 1937; P. A. Munz 1959; J. S. Mooring 1994). Some southern California Indian tribes used var. confertiflorum as a remedy for rheumatism (E. C. Jaeger 1941). It has been introduced into cultivation as an ornamental. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 21, p. 361. | FNA vol. 21, p. 361. | ||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Eriophyllum > Eriophyllum confertiflorum | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Bahia confertiflora | E. confertiflorum var. latum, E. confertiflorum var. laxiflorum | ||||
Name authority | (de Candolle) A. Gray: Proc. Amer. Acad. Arts 19: 25. (1883) | unknown | ||||
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